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New spindle for a Delta/Rockwell Drill Press

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Bernd:
This sort of goes along with 75Plus's thread HERE since the spindles are alike.

My neighbor picked up a Delta/Rockwell drill press with a very wobbly spindle. Apperently somebody must of  :wack: with a big hammer because the spindle was running out about .050". He asked if I could make a new one. Sure why not, ain't got nothin' else to do.  :doh: So here is how I did it.

I didn't take any pictures of turing the taper on the end for the chuck. Easy to do though. I used the compound slide. I used a last word indicator to tram the old part. Once the indicator read zero for the full length of the travel I cut the taper on a new piece of cold rolled stock.

Since the bushing that has the two teeth that were pretty well worn I just used a small end mill the fit in the "V" groove of the old spindle. Next I set up the Spindex and trammed it in.



Found the center using a wiggler. Touch the back side then did the front and took half of the distance traveled to get to the center of the rod.



Next I put in the piece of cold rolled stock. Touched off the bottom of the mill and went up another .020" for the first cut. I noticed that I had a slight vibration will cutting so I used two "V" blocks stacked on top of each other and some shim stock to get a snug fit in the "V". Then I used a clamp to gently hold the part in the groove. A pain in the butt, but I didn't break the cutter. I kept increasing the depth by rasing the table .020" untill I reach a depth of .150".



I also found a clamp handy when I first started into the cut. It was swapped for the end clamp when I got close to this clamp.



Next came the hole for a spring pin. I got the distance by laying the old shaft next to the new and eye balling (eye's are calibrated to 10,000th of an inch  :lol: )



And there is the finished shaft. I'll see if it fit's tomorrow when I go see my neighbor before we go for cocktails.  :ddb:  :ddb:  :ddb:  :ddb:



And another bit of info. Memeber's are always asking about feeds and speeds. This cutter is an .125" dia. run at 1000rpm and 1" feed per minute. I didn't use any formula to compute this. I just picked it out of thin air.

Bernd

dsquire:
Bernd

Nice one. Should fit like a glove. I guess that tomorrow will tell. Have a cool one for me and above all stay cool in this heat.  :wave: :wave:

Cheers  :beer:

Don

Stilldrillin:
Very nicely done Bernd!  :clap: :clap:

You hot over there? Send us a few therms.......  :thumbup:

David D

Bernd:
Thanks Don. Staying in the basement today. Nice and cool. Back to the four truck Shay.  :ddb:  :ddb:  :ddb:  :ddb:

Thanks David. Ok I'll bottle some of that heat and aend it to you.  :lol:

Bernd

75Plus:
Great job Bernd  :ddb: Do you have the collar that is attached to the spindle with the spring pin? If so please get the dimensions for me. The collar was missing on mine. I made what I thought would have been the right size but would like to duplicate the original.

Joe

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